Hydraulic press.



No. 776,934.` Patented December 6, 1904.

UNITED STATES PATENT OFFICE.

CARL PRTT, OF HAGEN, GERMANY, ASSIGNOR OF QNE-HALF TO ALFRED UOLSMAN, OFVVERDOI-IOL, GERIVIANY.

HYDRAULIC PRESS.

SPEGIFICATION forming part of Letters Patent No. 776,934, dated December6, 1904. Application filed March 30, 1904. Serial No. 200,855. (Nomodel.)

TO ml 10710111/ it 'Hu ry concern: movecl, so as to form a so-calledLLthreaded Be 1t known that I, (JARL Pnr'r, asubject of bayonetconnection the King of Prussia, German Emperor, and a elsacoverforholding the matrix in .its poslresident of Hagen, in the Province ofVVesttion, which cover is provided with a central 5 phalia, GermanEmpire, have invented certain bore c' for the admission of the water.The new and useful Improvemen s in ItIydraulic cover e may be fixed tothe press-blockcin the Presses, of which the following is an exact samemanner as the bottom I), by means of a specification. threaded bayonetconnection.

My invention relates to improvements in f' is a frame in which thepress-block is IO hydraulic presses, and more especially in guidedbymeans of guide-railsm and to which presses in which bodies consisting ofmetal or the cover c is rigidly lixed.

metal plates are pressed into a matrix directly To the press-block cVertical bars r/ are lixed, by means of the pressure of the waterwiththe upper ends of which are connected by out using any punch. meansof a traverse it. To this traverse /1 15 p The 'object of my inventionconsists in prothe hydraulic piston vi is fixed, which is situviding asimple device for moving the matrix ated in a cylinder t', connected inany confrom the press-block. I attain this purpose by venient manner toa water-pump-v The pressthe construction illustrated in theaccompanyblock c is provided with handles Zfr, by means ing drawings, inwhichof Which the press-block can be turned for the 20 Figure 1 1s aVertical section of the press purpose ofactuating the bayonetconnections. in the posltion in which the pressingis effected. Thebottom or the bar (17., iixed to the same,

Fig. 2 is a Vertical section of the same in the can be turned by meansof a device o, the conposition irn which the matrix is placed into thestruction of whichisillustrated in Figs. 6 and 7. press or is removedfrom the same. Fig. 3 is It will be seen from the drawings that the 25 aVertical section of the principal parts of the upper thread of thebottom I), as well as of press, on an enlarged scale. Fig. tis asectionthe cover e, is not provided with a cut-out. on line 1 1 of Fig. 3. Fig.5 is a section on The Operation of the press is as follows: l'f line 2 2of Fig. 3. Fig. 6 is a plan of a dethe press is in the position shown inFig. 2, the tail part of the press. Fig. 7 is aside view of matrix,containing the body to be pressed, 50 the part shown in Fig. 6, and Fig.8 is a horiwhich body may already be lilled with water, zontal sectionalview taken on line 8 8 ofFig. 3. is placed upon the bottom 7). Thepress-block In the drawings, a is a matrix consisting of c is in. thisposition situated so that the handles two parts. It will be seen thatthe matriX touch the guide-rails m and that in raising has afrusto-conical form. the press-block by means of the hydraulic pis- 3 5is the bottom upon which the matrix is to ton the parts of the threadsof the bottom l), be placed. as Well as of the cover, pass through thecutc is a press-block in which the bottom 7) is outs between the threadsin the press-block e. situated. The press-block is provided with a Inactuating the press the press-block c is suitable bore for taking up thematrix a, the raised until the conical part of the same takes 40 outsidesurface of which is suitably shaped so up the matrix a, containing thebody to be that the two parts of the same are held topressed. In furtherraising the press-block gether against the pressure of the water. thematrix et is taken along. The bottom 7) The bottom I) consists of ascrew part of still remains for a moment in its position uneach threadof which is removed, as may be til the parts of the threads in the blockc push 45 seen from Fig. 5. The bottom b is integrally against the upperfull thread of the bottom f). provided with a bar (Z, by means of whichthe During' the further upward movement of the bottom Z) can be rnved inthe Vertical direcpress-block the bottom 1) is also raised. It tion. Inthe press-block c threads are prowill be understood that by thisarrangement vided Which correspond to the threads of the a small spaceremains between the matrix at 50 bottom b, part of Which threads is alsoreand the bottom part i). During' the further IOO upward movement of thepress-block c the parts of the Upper thread in the press-block c Willpush against the Upper full thread of the cover er, thereby stopping themovement of the press-block c. In this position a small space willremain between the cover e and the Upper surface of the matriX If nowthe press-block c is turned by means of the handles c, this press-blockwill be further raised until the Upper surface of the matrix pushesagainst the lower surface of the cover e, and at the same time the partsof the threads of the cover e will be screwed to the parts of thethreads in the press-block c, thereby actuating the bayonet connection.Thereafter the bottom b is turned by means of the device 0 until theUpper surface of this bottom pushes against the lower surface of thematriX af, thereby actuating at the same time the bayonet connection.The press is then in the position shown in Fig. l, in which position thepressing proper is efected. After the pressing has been done thepress-block c as well as the bottom are turned back. If now the water inthe cylinder i' is allowed to flow out, the press-block c will sink downon account of its own weight and all the parts will come back into theposition shown in Fig. 2, thereby removing the matrix from thepress-block, so that the matrix can easily be taken out of the press.

Having thus fully described the nature of my invention, what I desire toSecure by Letters Patent of the United States isl. l'n a hydraulicpress, the combination of a press-block provided with a suitable borefor taking up the matrix, a bottom piece for carrying the matrix, abayonet connection between the press-block and the bottom' piece, acover for the matriX, a bayonet connection between the cover and thepress-block, and means for leading water into the matrix, substantiallyas described and for the purpose set forth.

2. In a hydraulic press, the combination of a press-block provided witha suitable bore for taking up the matrix, a bottom pie'ce for carryingthe matriX, a bayonet connection between the press-block and the bottompiece, a cover for the matrix, a bayonet connection between the coverand the press-block, means for leading water into the matriX, and meansfor raising and lowering the press-block, substantially as described andfor the purpose set forth.

3. In a hydraulic press, the combination ofV scribing witnesses.

CARL PROTT. litnessesz OTTO KNIG, J. A.r RITTERsHAUs.

